Animation 颤振:捕捉下的多个动画
如何让同一动画同时在不同的地方播放。目前,每当我点击屏幕,动画就会在那个地方开始播放3秒钟,但如果我再次按下另一个地方,动画就会跳到那个地方,但我希望它能让旧的那个地方结束。因此,如果按五次,屏幕上应该有五个动画,而不是现在一次只播放一个 这是我的密码Animation 颤振:捕捉下的多个动画,animation,flutter,flare,Animation,Flutter,Flare,如何让同一动画同时在不同的地方播放。目前,每当我点击屏幕,动画就会在那个地方开始播放3秒钟,但如果我再次按下另一个地方,动画就会跳到那个地方,但我希望它能让旧的那个地方结束。因此,如果按五次,屏幕上应该有五个动画,而不是现在一次只播放一个 这是我的密码 class HomePage extends StatefulWidget{ @override _HomePageState createState() => _HomePageState(); } class _HomePag
class HomePage extends StatefulWidget{
@override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
double posx = -100.0;
double posy = -100.0;
void onLongPressMoveUpdate(BuildContext context, LongPressMoveUpdateDetails details)
{
final RenderBox box = context.findRenderObject();
final Offset localOffset = box.globalToLocal(details.globalPosition);
var tempName = "tryck";
setState(() {
_tryckanimation = tempName;
posx = localOffset.dx;
posy = localOffset.dy;
});
}
void onTapDown(BuildContext context, TapDownDetails details)
{
final RenderBox box = context.findRenderObject();
final Offset localOffset = box.globalToLocal(details.globalPosition);
var tempName = "tryck";
setState(() {
_tryckanimation = tempName;
posx = localOffset.dx;
posy = localOffset.dy;
});
}
void onTapUp(BuildContext context, TapUpDetails details)
{
final RenderBox box = context.findRenderObject();
final Offset localOffset = box.globalToLocal(details.globalPosition);
var tempName = "tryck";
Future.delayed(const Duration(milliseconds: 3000), () {
setState(() {
setState(() {
_tryckanimation = tempName;
posx = -100.0;
posy = -100.0;
});
});
});
}
new GestureDetector(
onTapDown: (TapDownDetails details) => onTapDown(context, details),
onTapUp: (TapUpDetails details) => onTapUp(context, details),
onLongPressMoveUpdate: (LongPressMoveUpdateDetails details) => onLongPressMoveUpdate(context, details),
child: new Stack(fit: StackFit.expand, children: <Widget>[
new Container(color: Colors.transparent,
),
new Positioned(
height: 100.0,
width: 100.0,
child: FlareActor(
"assets/images/tryck2.flr",
animation: _tryckanimation
),
left: posx -50.0,
top: posy- 50.0,
),
类主页扩展StatefulWidget{
@凌驾
_HomePageState createState()=>\u HomePageState();
}
类_HomePageState扩展状态{
双posx=-100.0;
双posy=-100.0;
void onLongPressMoveUpdate(构建上下文,LongPressMoveUpdateDetails详细信息)
{
final RenderBox=context.findenderObject();
最终偏移量localOffset=box.globalToLocal(details.globalPosition);
var tempName=“tryck”;
设置状态(){
_tryckanimation=tempName;
posx=localOffset.dx;
posy=localOffset.dy;
});
}
void onTapDown(BuildContext上下文,tappdownDetails)
{
final RenderBox=context.findenderObject();
最终偏移量localOffset=box.globalToLocal(details.globalPosition);
var tempName=“tryck”;
设置状态(){
_tryckanimation=tempName;
posx=localOffset.dx;
posy=localOffset.dy;
});
}
void onTapUp(BuildContext上下文、TapUpDetails)
{
final RenderBox=context.findenderObject();
最终偏移量localOffset=box.globalToLocal(details.globalPosition);
var tempName=“tryck”;
延迟(常数持续时间(毫秒:3000),(){
设置状态(){
设置状态(){
_tryckanimation=tempName;
posx=-100.0;
posy=-100.0;
});
});
});
}
新手势检测器(
onTapDown:(tappdownDetails)=>onTapDown(上下文,细节),
onTapUp:(TapUpDetails细节)=>onTapUp(上下文,细节),
onLongPressMoveUpdate:(LongPressMoveUpdateDetails)=>onLongPressMoveUpdate(上下文,详细信息),
子项:新堆栈(拟合:StackFit.expand,子项:[
新容器(颜色:Colors.transparent,
),
新定位(
高度:100.0,
宽度:100.0,
儿童:FlareActor(
“资产/图像/tryck2.flr”,
动画:_tryckanimation
),
左:posx-50.0,
顶部:posy-50.0,
),
您必须为所有动画小部件设置相同的AnimationController
试试这个
import 'dart:math';
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
home: Scaffold(
body: HomePage(),
),
);
}
}
class HomePage extends StatefulWidget {
@override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage>
with SingleTickerProviderStateMixin {
final tappedPositions = <Offset>[];
AnimationController _animationController;
@override
void initState() {
_animationController = AnimationController(
vsync: this,
duration: const Duration(seconds: 2),
);
_animationController.repeat();
super.initState();
}
final x = const CircularProgressIndicator();
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("App Bar"),
),
body: Stack(
children: <Widget>[
GestureDetector(
onTapUp: (tabDetails) {
setState(() {
tappedPositions.add(tabDetails.localPosition);
});
},
child: Container(
color: Colors.white,
),
),
for (final position in tappedPositions)
Positioned(
top: position.dy,
left: position.dx,
child: MyAnimatedWidget(
animation: _animationController,
),
),
],
),
);
}
}
class MyAnimatedWidget extends StatelessWidget {
final Animation animation;
const MyAnimatedWidget({Key key, this.animation}) : super(key: key);
@override
Widget build(BuildContext context) {
return AnimatedBuilder(
animation: animation,
child: Icon(
Icons.phone,
color: Colors.blue,
size: 30.0,
),
builder: (context, child) {
return Transform(
alignment: Alignment.center,
transform: Matrix4.identity()
..translate(animation.value)
..rotateY(pi * 2 * animation.value),
child: child,
);
},
);
}
}
import'dart:math';
进口“包装:颤振/材料.省道”;
void main()=>runApp(MyApp());
类MyApp扩展了无状态小部件{
@凌驾
小部件构建(构建上下文){
返回材料PP(
标题:“颤振演示”,
家:脚手架(
正文:主页(),
),
);
}
}
类主页扩展了StatefulWidget{
@凌驾
_HomePageState createState()=>\u HomePageState();
}
类_HomePageState扩展状态
使用SingleTickerProviderStateMixin{
最终攻丝位置=[];
AnimationController _AnimationController;
@凌驾
void initState(){
_animationController=animationController(
vsync:这个,,
持续时间:常数持续时间(秒数:2),
);
_animationController.repeat();
super.initState();
}
最终x=常量循环前进指示器();
@凌驾
小部件构建(构建上下文){
返回脚手架(
appBar:appBar(
标题:文本(“应用程序栏”),
),
主体:堆栈(
儿童:[
手势检测器(
onTapUp:(选项卡详细信息){
设置状态(){
tappedPositions.add(tabDetails.localPosition);
});
},
子:容器(
颜色:颜色,白色,
),
),
用于(攻丝位置的最终位置)
定位(
顶部:position.dy,
左:position.dx,
子:MyAnimatedWidget(
动画:_animationController,
),
),
],
),
);
}
}
类MyAnimatedWidget扩展了无状态Widget{
最终动画;
constMyAnimatedWidget({Key-Key,this.animation}):super(Key:Key);
@凌驾
小部件构建(构建上下文){
返回动画生成器(
动画:动画,
子:图标(
Icons.phone,
颜色:颜色,蓝色,
尺寸:30.0,
),
生成器:(上下文,子对象){
返回变换(
对齐:对齐.center,
转换:Matrix4.identity()
…翻译(动画.值)
..rotateY(pi*2*animation.value),
孩子:孩子,
);
},
);
}
}